135212510 has 16 divisors (see below), whose sum is σ = 244015200. Its totient is φ = 53944416.

The previous prime is 135212491. The next prime is 135212513. The reversal of 135212510 is 15212531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135212513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13490 + ... + 21269.

It is an arithmetic number, because the mean of its divisors is an integer number (15250950).

Almost surely, 2^135212510 is an apocalyptic number.

135212510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135212510 is a deficient number, since it is larger than the sum of its proper divisors (108802690).

135212510 is a wasteful number, since it uses less digits than its factorization.

135212510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35155.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 135212510 is about 11628.0914169093. The cubic root of 135212510 is about 513.2618184327.

The spelling of 135212510 in words is "one hundred thirty-five million, two hundred twelve thousand, five hundred ten".